New technology of ionic liquid-based NH3/CO2 separation from melamine tail gas  

作　　者：Shaojuan Zeng Haifeng Dong Yinge Bai Xiangping Zhang Suojiang Zhang 

机构地区：[1]CAS,Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex System,Beijing Key Laboratory of Ionic Liquids Clean Process,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China

出　　处：《Green Chemical Engineering》2020年第1期5-5,共1页绿色化学工程（英文）

摘　　要：Melamine is an important industrial raw material,and widely used in the production of thermal insulation materials,adhesives,fiber materials and so on.Generally,every 1 ton of melamine produced through decomposition and condensation reaction using urea generates about 2.2 tons of tail gas containing about 70%NH_(3)and 29%CO_(2).According to the phase diagram of NH_(3)–CO_(2)-AM(ammonium carbamate),NH_(3)and CO_(2)are easy to react and form AM solid under 63C at ambient pressure,which make it difficult to selective recovery of NH_(3).Water scrubbing is the mostly used technology in industries,but this method demands high energy consumption and discharges a large amount of NH_(3)-containg wastewater,which seriously restricts the sustainable development of industries.

关 键 词：INSULATION AMBIENT restrict 

分 类 号：X701[环境科学与工程—环境工程] TQ113.2[化学工程—无机化工] TQ028